CVE-2026-59931: PHPSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist

high Affects phpoffice/phpspreadsheet. Feed 2026.10.29.1, updated 2026-10-28; published 2026-07-23.

PHPSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist

Package: phpoffice/phpspreadsheet Composer
Affected versions: >=4.0.0 and <5.8.1 or >=3.3.0 and <3.10.7 or >=2.2.0 and <2.4.7 or >=2.0.0 and <2.1.18 or <1.30.6
Fixed in: 5.8.1, 3.10.7, 2.4.7, 2.1.18, 1.30.6
Severity: high CVSS 7.7
Exploitation: not on CISA KEV · EPSS 0% (40.8th percentile)
Published: 2026-07-23
Source: osv.dev

References

NVD record phpoffice/phpspreadsheet advisories

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